Warp clamp for loom beams



April 6, 1926.

1,579,227. C. L. MANGUM WARP CLAMP FOR oom BEAMS Filed April 28, 1924 :IZZI:

Patented Apr. 6, 1926.

were stares earner errica.

CARL L. MANGUM, OF BIRMINGHAM, ALABAMA.

WARP CLAMP non LOGM BEAMS.

Application filed April 28, 1924. Serial No. 709,693.

To all whom it may concern:

Be it known that I, CARL L. MANGUM, a citizen of the United States of America, residing at Birmingham, in the county of Jefferson and State of Alahammhave invented certain new and useful Improvements in --VVarp Clamps for Loom Beams, of which the foliowing is a specification.

My invention relates to a warp clamp for loom beams.

In present practice a considerable amount of the warp is lostwhen the beam is transferred to the tying-in machine, due to the '\fact that the warp threads do not come in even condition and generally from to must be cut off before the tying-in operation. This is largely due to the character of the means employed for holding the warp threads in position on the filled beam.

The object of my invention is to design a simple and inexpensive clamp which has the novel characteristic of being formed of separable rigid elements, one of which is adapted to be applied to the beam while running so that the warp threads will be drawn over it after the beam has completed a rotation. The other element is thereupon adapted to be interlocked with the first'ele'ment so as to clamp all of the warp threads hetweenrigid surfaces of the assembled clamp in proper position.

A further distinctive feature of my inven- .tion is that the clamp project-s beyond the ends of the beam in convenient position to rest'on the rails of the tying-in or drawingin machine so as to present the warp threads in most convenient position for the tyingin operation.

My invention contemplates the utilization of a clamp formed of separable sections, one of which is provided with suitable clamps .adaptedto engage over the ends of the warp beam, thereby permitting such clamp section to be quickly and readily applied without stopping the machine which is very objectionable as it may vary the coloring of the warp threads or change its uniform characteristics, as by leaving too much vsizingin that portion of the warpthreadsleft standing in the sizing.

A further advantage of utilizing the an-- gle members to'form the clamp is that the pads can be set in the indented face of the under clamp member and be thus protected from damage.

My invention also comprises the novel details of construction and arrangement of parts, which in their preferred embodiment only are illustrated in the accompanying drawings which form a part of this specification, and in which Fig. 1 my improved warp clamp applied.

Figs. 2 and 3 are detail views of the ends respectively of the under and upper clamp member showing the manner of attaching the several clamp springs.

Fig. 4 is an enlarged cross-sectionalview through the assembled warp clamp show.- ing the position of the warp threads when clamped therein. v

Fig. 5; is a longitudinal sectional view through one end of the clamp assembled.

Fig. 6 is a view of the two clamp members preparatory to assembling.

Similar reference numerals refer to simi. lar parts throughout the drawings.

1 have shown my invention as applied to a typical loom beam' having ends 1, to each of which is applied a gear 2 typical of a let off for the beam. The warp threads 3, Fig. 4, are wound on the beam in accordance with the practice well understood in the art. My clamp comprises a lower rigid member a preferably in the form of an angle iron or piece of sheet metal bent transversely to stiffen it and provide it with an indented surface. At both ends of this member I mount a hold-down plate 5 under. which the upper ends of heavy bent wire spring arms 6 extend and are clamped in place by bolts 7, said members being brought up through slots or openings 8 provided in the angle. The wire is bent to form two par allel legs out-turned at the lower end of the loop so as to form a spring element 9 which can be forced down over the end of the beam and grip it with sufficient strength to hold the clamp member in position. Betweenthe clamp connections at each end. I mount in the indented face of the clamp member 4 a pad or cushion 10. The upper clamp member 11 is also preferably in the form of a metallic angle but its shape will conform to that of the member 4-. At one end this member 11 is adapted to pass unis a side view of a loom beam with Cir Cal

der and be held down by the overhung end 12 of the hold-down plate 5. At its other end, the member 11 carries a spring clip 13 which is bolted thereto through a triangular shaped block 1st. The sides of clip 13 are bent inwardly and then outwardly so as to spring over and clasp the sides of the clamp member 1 when the two elements of the clamp are assembled. This member 11 when engaged under one hold-down end 12 will at its other end 12 fall just short of the other hold-down end 12. The clamp at both ends projects substantially beyond the ends of the beam sufiiciently to engage and ride on the rails or" the tying-in machine.

In operation, when the loom beam has been filled and it is ready to clamp the warp, the operator first applies the clamp member at to the running beam, this being an easy operation as it is only necessary to drop the clamp member over the warp threads and press it down so that its springs 9 will engage over and clamp the marginal portions of the beam heads. After the beam has made a complete rotation the warp threads will be laid over the clamp member 1 and then the outer clamp member 11 is applied by slipping one end under the hold-down 12 and pressing its other end with its spring clamp 13 down to interlock it with the member The clamp is thus assembled and the machine can be stopped and the loom beam removed, after which the warp threads are cut straight across about four inches from the clamp. Obviously the threads being gripped between the rigid angle members 1 and 11 will be firmly and positively held in true alignment across the beam and there will be no slippage during the storage or transfer of the beam and there will be no necessity for loss of more than enough of the warp to accomplish the tying-in operation. My device will thus efi'ect a very large saving in waste of warp thread over the present prevailing practice.

It is obviously desirable that the clamps 9 shall engage the marginal portion of the ends or beam heads as, when so engaged, the inner clamp member is free to rotate with the beam and the clamp is most easily ap plied. Il'hen I refer to the marginal portion of the beam heads I mean any portion thereof where the attachment of the clamp will not interfere with the bearings or any other part of the slasher as the inner clamp member rotates with the warp beam.

Though I have described with great particularity the details of the embodiment of the invention herein shown, it is not to be construed that I am limited thereto, as changes in arrangement and substitution of equivalents may be made by those skilled in the art without departing from the invention as defined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A warp clamp tor loom beams, comprising a rigid inner member having means to detachably engage the marginal portion ot the beam heads, a rigid outer member, and a spring clamp element adapted to detachably interlock said inner and outer clamp members aml clamp the warp threads between them.

:2. A warp clamp tor loom beams, comprising a rigid inner member having means to detachably engage the marginal portion of the beam heads. and a rigid outer member carrying a spring clamp element adapted to detachably engage and interlock with said inner clamp member and clamp the warp threads between them.

3. A warp clamp for loom beams, comprising a rigid inner member having opposed springs spaced to clamp between them the marginal edges of the ends of the beam, and an outer member adapted to be clamped to the inner member and to hold the warp between them.

st. A warp clamp according to claim 11, in which the inner member carries at one end a hold-down for the outer member and the outer member has at one end a clamp adapted to detachably engage the inner member.

A warp clamp according to claim 3. in which the clamp members are angled in cross section and the springs are still elements rigidly mounted on the apex of the inner clamp member to hold its channel uppermost when in position on the beam.

(3. A warp clamp for loom beams. comprising an inner rigid angle member having springs adapted to clamp between them the loo ends of the beam, a hold-down at one end of e said member, an outer clamp member adapt ed to engage said hold-down at one end, and a spring to clasp its other end to the inner member, said members when assembled being adapted to clasp the warp threads firmly between them.

7. A warp clamp according to claim (3, in which the inner member has duplicate holddowns at its inner ends and the outer clamp member carries at one end the spring which is adapted to clasp it to the inner member.

8. A warp beam clamp comprising two separable clamp members, the inner member being rigid, means to detachably mount said inner member on the beam heads. said mounting means and inner (lamp member being of such character as to permit the clamp member to make a complete rotation with the beam, and an outer element adapt ed to engage the inner member so as to clamp between them the warp threads wound over the inner member by its rotation with the beam.

In testimony whereof I allix my signature.

CARL L. MANGID'L 

